Dipping device



May 8, 1923. 1,454,244 F- J. M DONALD DIPPING DEVICE lFiledIJune 28. 1 921 2 Sheets-Shegt 1 my 1 I o Inventor [Id/MacDonald May 8, 1923.

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F. J. M DONALD DIPPING DEVICE iFi ledjJune 28. 1921 I 2 sheets-she t 2 Inventor EJMQcDOnaId JFK J. MAcDOIIALD, OF AKRON, OHIO, ASSIGNOB TO THE B. 1

OF NEW YORK, 19'. 'Y., A CORPORATION OF NEW YORK.

F. GOODRICH COMPANY,

DIPPING DEVICE.

To all whom it may concern Be it known that I, FRANK J. MAoDoNALD, a citizen of the United States, residing at Akron, in the county of Summit and State of Ohio, have invented a certain new and useful Dipping Device, of which the followingis a specification.

This invention relates to apparatus for passing an article through a fluid, an exam ple belng the dipping of an article in a liquid orsemi-liquid bath. It is particularly advantageous Where, from the nature of the article or of the bath, the artlcle requires. to be agitated. while in the bath to obtain intimate association of the liquid with the article.

The accompanying drawings show a device adapted for applying liquid such as rubber cement to a fiat, flexible article such as a sole for a rubber shoe, such soles com-J monly being made of macerated mixtures of rubber and fibrous material and known as ra stock soles.

%)ne object of my invention is to provide simple, automatic means for passing the article throu h the fluid, and means by which the article may be quickly and thoroughly coated, or impregnated with, or subjected to the action of the fluid. Another object is automatically to remove an excess of liquid from the article. A further object is to provide a device adapted to work upon articles of different size, thickness or shape.

Of the accompanying drawings:

Fig. 1 is a side elevation of a sole cementing machine embodying a preferred form of my invention.

Fig. 2 is a partial plan view of the same.

Fig. 3 is a longitudinal, vertical section through the dipping mechanism, on line 3-3 of Fig. 2.

Referring to the drawings, 10'is a frame in which is mounted a motor 11 adapted to actuate a variable-stroke pitman l2, and, through a drive chain 13, a pump 14. A

cement supply-tank 15 is mounted in said frame, 16 is a pump-inlet ipe connecting the bottom of said tank wit the pump 14, and 17 is a pump-discharge pipe connecting said pump with one end of a dipping tank 18 mounted on top of the frame 10. 18 is an outlet or overflow pipe connecting the other end of said dipping tank with the top of the supply-tank 15. The pump 14, and its connections just described, are thus the card-clothin adapted to keep the cement inv circulation at an approximately constant level through the tank at the other end (Fig. 3). The

concave upper face of the false-bottom 20 is covered with card-clothing 23, such as is used for carding cotton and other fibers, with the bent wire teeth thereof sharpened (which may best be done by simply pressin flatwise against an abra ing wheel, pro ucing beveled points) and inclined toward the delivery end of the machine. 24 is an inverted piece of card-clothing, providing a complementary field of bent wire teeth, their free lower ends also being similarly sharpened and inclined toward the delivery end of the machine, said card-clothing 24 being mounted on the arcuate surface of a substantially quadrant-shaped structure 25, preferably of sheet metal, secured at its apex to a rock-shaft 26 floatingly journaled in vertical forked brackets 27, 27 mounted at opposite sides of the dipping tank 18. The teeth of the card-clothing 24 are backed by a padding 29, preferably of felt. The arcuate section of the member 25 is perforated as shown at 30, 30, the false-bottom 20 is perforated at 30, 30 and the ribs 20 are perforated at 30", 30 (Fig. 3), to permit the circulation of cement therethrough. The member 25 isof a reduced radius at the anterior end of the device as shown at 25 (Fig. 3), whereby the points of the opposed sets of teeth are relatively far apart, as indicated at 25", to facilitate the admission of the work between the two sets of teeth.

.A rock-lever 31 is secured to one end of the rock-shaft 26, extending downward therefrom, and formed with a fork at its lower end. 32 is a bell crank lever fulcrumed at 33 on the adjacent bracket 27 one arm thereof being formed with a crank-pin 34 mounted in the fork of the rock-lever 31 and the other arm being hinged to the pitman 12, which is thus adapted to rock the quadrant-shaped structure 25 about its shaft 26 as indicated by the dotted lines in Fig. 3. cans for pressing the excess of liquid guiding the from the work as the latter leaves the bath comprises a roll 35 secured to a transverse shaft 36 journaled in brackets 37, 37 at the sides of the dipping tank near its delivery end, said shaft being provided at one'end, outside its .bracket, with a gear 38 and with a sprocket 39 adapted to be driven by a chain 39*. The brackets 37 are each formed with aslot 40 (Fig. 1), through which extends a shaft 41 journaled in the upper ends of levers 42, 42 pivoted at their lower ends to the brackets 37 at 43. 44, 44 are tension springs connecting said levers with brackets 27 and adapted yieldingly to hold shaft 41 toward shaft'36. 45 is a roll secured upon shaft 41 and adapted to be pulled against roll 35 by the springs 44, and 46 is a gear secured to shaft 41 in mesh with gear 38, the rolls being thusheld yieldingly together and positively driven to seize the Work 47 as it emerges from the bath, press the excess cement from the work and pass it out of the apparatus onto a carrier or receptacle (not shown). 48 is a guide-plate extending between the side walls of the dipping tank adjacent the rolls 35 and 45, for work between said rolls. 49 is a sloping feed table secured to the anterior end of the dipping tank 18 for guiding the work between the two fields of teeth.

In the operation of the device the work is placed on the feed table 49, from which it slides down until its leading margin is engaged by the reciprocating teeth 24 and carried forward and downward thereby into the cement, which may be kept circulating by the pump 14. During the backward movement of the reciprocating teeth 24 the work is held against recession by the pawl effect of the bent teeth 23 of the lower set, the upper bent teeth 24 sliding backward over the work. Thus the work is carried through the liquid by a series of jerks, which insures an intimate association of the liquid with the work, which effect also may be promoted by the scratching effect of the teeth. The rocking member 25 being slidably journaled in the forked brackets 27, and the upper teeth being backed by the padding 29, a substantially even pressure on all parts of the work is obtained, although successive pieces of the work be of difierent thickness. The presser rolls being yieldingly held together by the springs 44 exert substantially the same pressure upon work of different thicknesses. By adjusting the stroke of the pitman 12 the length of time during which the work remains in the bath, with a given speed of the motor, may be regulated.

Various modifications may be resorted to without departing from the scope of my invention, and it do not limit my claims wholly to the articular embodiment shown.

It claim:

1. A dipping device comprising a fluidcontainer, a set of pawl-like teeth adapted to engage the work, and. means for reciprocating said set of teeth to propel the work through said container.

2. dipping device comprising a fluid container, a-set of pawl-like teeth adapted to engage the work, means for reciprocating said set of teeth to propel the work through said container, and means for preventing the return movement of the work. A

3. A dipping device comprising a liquidcontainer, a reciprocating work feeder therein, and means for preventing recession of the work.

4. A dipping device comprising a fluidcontainer, means-for causing a flow of fluid through said container, and a reciprocating set of pawl-like teeth adapted to feed the work through said container in contact with said fluid.

5. A dipping device comprising a fluidcontainer, an arcuate field of teeth adapted to engage the work, and means for imparting an oscillating movement to said field 01'' teeth to propel the work through said container.

6. A dipping device comprising a liquidcontainer, an ,arcuate set of teeth mounted therein for supporting the work, and reciprocating means for imparting forward movement to the work while the latter is in said container.

7. A dipping device comprising a fluidcontainer, a set of teethadapted to engage the work to prevent its recession, and a reciprocating set of teeth adapted to engage the work to drive it forward through said container, one of said sets of teeth being adapted for a pawl-like action upon the work.

8. A dipping device comprising a fluidcontainer, an arcuate set of teeth adapted to engage the work to prevent its recession, an arcuate set of teeth adapted to engage the work to drive it forward through said container, and means for imparting an oscillating movement to the last said set of teeth. I 9. A dipping device comprising a container, a set of teeth adapted to engage the work to prevent its recession, a set of teeth adapted to'engage the work to drive it forward through said container, and means for reciprocating the last said set of teeth, one of said sets of teeth being yieldingly impelled toward the work.

10. A dipping device comprisin a container, an arcuate set of teeth a apted to engage the work to prevent its recession, an arcuate set of teeth adapted to engage the work to drive it forward through-said container, means for oscillating the last said set of teeth, and mountings for said sets of teeth, one of said mounting being yieldingly impelled toward the work.

11. A dipping device comprising a coni tainer, a member provided with a curved set of teeth adapted to engage the work and extending into said container, said member being Journaled substantially concentrically with said set of teeth, and means forturning said member about its journal to engage and propel the work within said container.

12. A dipping device comprising .a container, a member provided with a curved set of teeth adapted to engage the "Work within said container, said member being jou'rnaled substantially concentrically with said set of teeth and adapted yieldingly to bear upon the work, and means for turning said member about its journal to engage and propel the'work within said container.

13. A dipping device comprising a container, a false bottom in ,said container, a set of teeth mounted thereon and adapted to engage one face of the work, a set of teeth adapted to engage the opposite face of the work, and means for moving one of said sets of teeth relative to the other to propel the work.

.14. A dipping device comprising a container, a set of teeth adapted to engage the work to impel it through said container, said set of teeth receding from the work at the latters point of insertion, and means for reciprocating said set of teeth to propel the work.

15. A dipping device comprisinga container, two sets of teeth mounted therein and adapted to engage opposite sides of the work. the points of the teeth of the respective sbts being relatively far from each other at one end of the device to permit the introduction of the Work between the same, and means for moving one of said sets of teeth relative to the other to advance the work through said container.

16. A dipping device comprising. a container, a set of teeth adapted to engage the work within said container, a mounting for said set of teeth adapted to ride upon the work, and means for moving said set of teeth to advance the work through said container.

17. A dipping device tainer, two sets of teeth adapted to engage opposite sides of the work within said container, means for yieldingly holding said sets of teeth together upon the work, means for moving one of said sets of teeth relative to the other to advance the work, and a pair comprising a conof presser rollersadapted to receive the work as 1t passes from between said sets of teeth and to press excess liquid from the work.

18. A dipping device comprising a container, a curved false bottom in said contain er, a set of pawl-like teeth mounted upon the concave face of said false bottom, a convex member floatingly j ournaled on t-ainer and extending into the latter, a set of pawl-like teeth mounted uponthe convex face 0 the last said member, and means for imparting a rotative movement to the last said member.

19. A dipping device comprising a container provided with a 'pair of bearing slots at opposite sides thereof, a member slidingly journaled in said bearing slots and extending into said container, a convex set of teeth mounted on said member, and means for oscillating said journaled member while permitting the latter to assume different positions in its bearing slots.

20. A dip-ping device comprising a container, two opposed sets of teeth adapted to engage opposite sides of the work within a said container, and ,means for imparting successive movements to one of said sets of teeth to propel the work through said container in a succession of movements.

21. A device of the character described comprising a liquid container and a reciprocating work-feeder therein having a workengaging portion composed of card-clothing.

22. A device of the character described comprising a reciprocating work-feeder, and a work-recession-preventing structure composed of carding cloth.

23. A dipping device comprising a bath, means for passing the work the'rethrough, a pair of wringer rolls, means for driving one of said rolls, levers provided with bearings for one of said rolls, and yielding means connected with said levers for holding said rolls yieldingly together.

24. A dipping device comprising a fluid container and two opposed sets of teeth within said container adapted to en age opposite sides of the work, and means or moving one of said sets of teeth to propel the work.

In witness whereof I have hereunto set my hand this 22 day of June, 1921.

FRANK J. MZQDONALD.

said con- 

